added database crate, "settings" with migrations and queries, running migrations on web startup

crates/database/src/tables/settings.rs

@@ -0,0 +1,57 @@
+use crate::error::{handle_error, Error};
+use sqlx::sqlite::SqliteQueryResult;
+use sqlx::types::chrono::{DateTime, Utc};
+use sqlx::{FromRow, SqliteExecutor};
+
+#[derive(FromRow)]
+pub struct Settings {
+    pub id: i64,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+    pub business_name: Option<String>,
+    pub business_logo: Option<Vec<u8>>,
+}
+
+impl Settings {
+    pub async fn init(conn: impl SqliteExecutor<'_>) -> Result<Option<()>, Error> {
+        let query: SqliteQueryResult = sqlx::query_file!("queries/settings/init.sql")
+            .execute(conn)
+            .await
+            .map_err(handle_error)?;
+
+        Ok((query.rows_affected() == 1).then_some(()))
+    }
+
+    pub async fn get(conn: impl SqliteExecutor<'_>) -> Result<Self, Error> {
+        sqlx::query_file_as!(Self, "queries/settings/get.sql")
+            .fetch_one(conn)
+            .await
+            .map_err(handle_error)
+    }
+
+    pub async fn set_business_name(
+        conn: impl SqliteExecutor<'_>,
+        value: Option<&str>,
+    ) -> Result<Option<()>, Error> {
+        let query: SqliteQueryResult =
+            sqlx::query_file!("queries/settings/set_business_name.sql", value)
+                .execute(conn)
+                .await
+                .map_err(handle_error)?;
+
+        Ok((query.rows_affected() == 1).then_some(()))
+    }
+
+    pub async fn set_business_logo(
+        conn: impl SqliteExecutor<'_>,
+        value: Option<&[u8]>,
+    ) -> Result<Option<()>, Error> {
+        let query: SqliteQueryResult =
+            sqlx::query_file!("queries/settings/set_business_logo.sql", value)
+                .execute(conn)
+                .await
+                .map_err(handle_error)?;
+
+        Ok((query.rows_affected() == 1).then_some(()))
+    }
+}